Some simple steps to minimise the effects of aquaculture activities on water quality and mahinga kai.

Chemical contaminants are chemicals toxic to plants and animals in waterways.

Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"

How may the activities of the mining industry influence water resources?

NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?

These datasets are available in a range of formats.

An illustrated example, showing how to input data and interpret SolarView results.

The kākahi or freshwater mussel was a valuable mahinga kai resource for many Māori.

Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods?